Patricia Gibbons wrote: > > > Yes, I have MIXW, with a tigertronics SignaLinkUSB interface, > connected to a Yaesu FT897D .. > > In digital mode, I can select the 500 Hz CW filter, then using the IF > shift, I move the IF passband so that it is centered on the signal > being received .. generally when channel center is between 1000 hz > and 1500 Hz... > > without the IF shift / passband tuning turned on, I find that the > passband of the CW filter is centered within the SSB channel, i.e. > centered on 1500 hz on the waterfall display .. works fairly well .. > > Elaine / WA6UBE ..
The center frequency of the FT-897 (all versions, if I am not mistaken) is 1000hz. In digi mode, if you use your 500hz filter, you should see on the waterfall a narrowing of the passband corridor centered on 1000hz. The corridor will be roughly 500 hz wide. You do not need to mess with the IF shift to center the signal. Put another way, you want to tune a signal so that it is centered on 1000hz. If you are using CAT control, the best way to do this is to click onto the signal on the waterfall, and then use the <ALIGN: 1000> macro to align the selected signal with the 1000hz spot. I find it convenient to have a MixW indicator at 1000Hz. In this way you achieve maximum benefit from the narrow IF filter. The IF shift command can then be used to filter out adjacent signals that are inside the 500hz receive passband of the radio. de Roger W6VZV
